PostgreSQL is an open-source Object-Relational Database Management System. This guide explains how to install and upgrade PostgreSQL server on Arch Linux. * A Vultr server running [up to date Arch Linux](https://docs.vultr.com/how-to-update-a-vultr-cloud-server#how-to-update-arch-linux). * A sudo user Install the PostgreSQL package. The installation creates a system user called `postgres`. $ sudo pacman -S postgresql Switch to the `postgres` user and initialize the database cluster. $ su......